Clean up outdated fixme comment
Clean up outdated fixme comment

(new_value -> value rename in api result was already implemented)

cmu-delphi/delphi-epidata,cmu-delphi/delphi-epidata,undefx/delphi-epidata,cmu-delphi/delphi-epidata,cmu-delphi/delphi-epidata,cmu-delphi/delphi-epidata,undefx/delphi-epidata,cmu-delphi/delphi-epidata